Question: Lake Kariba, a tributary of the Luena River, is fed by which river inflows?
Paraphrase: Lake Kariba, a tributary of the Luena Stream, is encouraged by which waterway inflows?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q1047206 wdt:P200 ?answer . ?answer wdt:P974 wd:Q1178822}
Answer: Zambezi River